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To reduce the number of modules we build in explicit builds (which use strict context hash), we prune unused header search paths. This essentially merges parts of the dependency graph. Determining whether a search path was used to discover a module (through implicit module maps) proved to be somewhat complicated. Initial support landed in D102923, while D113676 attempts to fix some bugs. However, now that we don't use implicit module maps in explicit builds (since D120465), we don't need to consider such search paths as used anymore. Modules are no longer discovered through the header search mechanism, so we can drop such search paths (provided they are not needed for other reasons). This patch removes whatever support for detecting such usage we had, since it's buggy and not required anymore. Depends on D120465. Reviewed By: dexonsmith Differential Revision: https://reviews.llvm.org/D121295
147 lines
5.3 KiB
Objective-C
147 lines
5.3 KiB
Objective-C
// RUN: rm -rf %t && mkdir %t
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// Check that search paths used by `#include` and `#include_next` are reported.
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//
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -I%S/Inputs/search-path-usage/a \
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// RUN: -I%S/Inputs/search-path-usage/a_next \
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// RUN: -I%S/Inputs/search-path-usage/b \
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// RUN: -I%S/Inputs/search-path-usage/c \
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// RUN: -I%S/Inputs/search-path-usage/d \
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// RUN: -DINCLUDE -verify
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#ifdef INCLUDE
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#include "a.h" // \
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// expected-remark-re {{search path used: '{{.*}}/search-path-usage/a'}} \
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// expected-remark-re@#a-include-next {{search path used: '{{.*}}/search-path-usage/a_next'}}
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#include "d.h" // \
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// expected-remark-re {{search path used: '{{.*}}/search-path-usage/d'}}
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#endif
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// Check that framework search paths are reported.
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//
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -F%S/Inputs/search-path-usage/FwA \
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// RUN: -F%S/Inputs/search-path-usage/FwB \
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// RUN: -DFRAMEWORK -verify
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#ifdef FRAMEWORK
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#include "FrameworkA/FrameworkA.h" // \
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// expected-remark-re {{search path used: '{{.*}}/search-path-usage/FwA'}}
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#endif
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// Check that system search paths are reported.
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//
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -isystem %S/Inputs/search-path-usage/b \
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// RUN: -isystem %S/Inputs/search-path-usage/d \
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// RUN: -DSYSTEM -verify
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#ifdef SYSTEM
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#include "b.h" // \
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// expected-remark-re {{search path used: '{{.*}}/search-path-usage/b'}}
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#endif
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// Check that sysroot-based search paths are reported.
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//
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -isysroot %S/Inputs/search-path-usage \
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// RUN: -iwithsysroot /b \
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// RUN: -iwithsysroot /d \
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// RUN: -DSYSROOT -verify
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#ifdef SYSROOT
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#include "d.h" // \
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// expected-remark {{search path used: '/d'}}
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#endif
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// Check that search paths used by `__has_include()` are reported.
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//
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -I%S/Inputs/search-path-usage/b \
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// RUN: -I%S/Inputs/search-path-usage/d \
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// RUN: -DHAS_INCLUDE -verify
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#ifdef HAS_INCLUDE
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#if __has_include("b.h") // \
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// expected-remark-re {{search path used: '{{.*}}/search-path-usage/b'}}
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#endif
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#if __has_include("x.h")
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#endif
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#endif
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// Check that search paths used by `#import` are reported.
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//
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -I%S/Inputs/search-path-usage/b \
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// RUN: -I%S/Inputs/search-path-usage/d \
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// RUN: -DIMPORT -verify
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#ifdef IMPORT
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#import "d.h" // \
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// expected-remark-re {{search path used: '{{.*}}/search-path-usage/d'}}
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#endif
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// Check that used header maps are reported when the target file exists.
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//
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// RUN: sed "s|DIR|%/S/Inputs/search-path-usage|g" \
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// RUN: %S/Inputs/search-path-usage/b.hmap.json.template > %t/b.hmap.json
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// RUN: %hmaptool write %t/b.hmap.json %t/b.hmap
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -I %t/b.hmap \
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// RUN: -I b \
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// RUN: -DHMAP -verify
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#ifdef HMAP
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#include "b.h" // \
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// expected-remark-re {{search path used: '{{.*}}/b.hmap'}}
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#endif
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// Check that unused header map are not reported.
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//
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -I%t/b.hmap \
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// RUN: -I%S/Inputs/search-path-usage/d \
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// RUN: -DHMAP_NO_MATCH -verify
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#ifdef HMAP_NO_MATCH
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#include "d.h" // \
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// expected-remark-re {{search path used: '{{.*}}/search-path-usage/d'}}
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#endif
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// Check that used header map is reported even when the target file is missing.
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//
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// RUN: sed "s|DIR|%/S/Inputs/search-path-usage/missing-subdir|g" \
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// RUN: %S/Inputs/search-path-usage/b.hmap.json.template > %t/b-missing.hmap.json
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// RUN: %hmaptool write %t/b-missing.hmap.json %t/b-missing.hmap
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -I %t/b-missing.hmap \
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// RUN: -I b \
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// RUN: -DHMAP_MATCHED_BUT_MISSING -verify
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#ifdef HMAP_MATCHED_BUT_MISSING
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#include "b.h" // \
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// expected-remark-re {{search path used: '{{.*}}/b-missing.hmap'}} \
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// expected-error {{'b.h' file not found}}
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#endif
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// Check that used header map is reported even when the target file is missing
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// and the lookup is initiated by __has_include.
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//
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -I %t/b-missing.hmap \
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// RUN: -I b \
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// RUN: -DHMAP_MATCHED_BUT_MISSING_IN_HAS_INCLUDE -verify
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#ifdef HMAP_MATCHED_BUT_MISSING_IN_HAS_INCLUDE
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#if __has_include("b.h") // \
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// expected-remark-re {{search path used: '{{.*}}/b-missing.hmap'}}
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#endif
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#endif
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// Check that search paths with module maps are NOT reported.
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//
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// RUN: mkdir %t/modulemap_abs
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// RUN: sed "s|DIR|%/S/Inputs/search-path-usage|g" \
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// RUN: %S/Inputs/search-path-usage/modulemap_abs/module.modulemap.template \
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// RUN: > %t/modulemap_abs/module.modulemap
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// RUN: %clang_cc1 -Eonly %s -Rsearch-path-usage \
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// RUN: -fmodules -fimplicit-module-maps -fmodules-cache-path=%t/modules \
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// RUN: -I %t/modulemap_abs \
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// RUN: -I %S/Inputs/search-path-usage/a \
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// RUN: -DMODMAP_ABS -verify
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#ifdef MODMAP_ABS
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@import b; // \
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// expected-no-diagnostics
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#endif
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